Automatic multiple sash window



March 16, 1943. H. LARSON AUTOMATIC MULTIPLE SASH WINDOW Filed April 21, 1941 a Sheets-She t 1 INVENTOR W 6. y m m ATTORNEY March 16, 1943. H. LARSON AUTOMATIC MULTIPLE SASH WINDOW 3 Sheets-Sheet 2 Filed April 21, -1941 JZ. w

March 16, 1943.

H. LARSON AUTOMATIC MULTIPLE SASH WINDOW 3 SheetsSheet 3 Filed April 21, 1941 M R 05 E 2 5 ma y I M Y B u u 4 J V U m, r 4 M a J W ATTORNEY li'atented Mar. 16, 1943 UNITED STATES PATENT OFFICE 2.31am AUTOMATIC MULTIPLE sasn wm ow Harry Larson, Oakland, Calif. Application April 21, 1941, Serial No. 389,484

' 8 Claims. This invention relates to windows of the multiple sash type in which one sash is employed as a manipulating and control sash. Sashes of this general type are well known and have been widely employed. However, as commercially made and installed, they have been subject to certain disadvantages and failings; more particularly, they have been relatively expensive due to complex and intricate construction details; the windows. have been difllcult to install, requiring special fittings and considerable labor on each installation.

One of the major items of expense involved in a 7 window of this type is the operating mechanism.

. the present preferred form ofmultiple sash and the multiple sash operator construction of this invention are disclosed. v p In the drawings accompanying and forming a part hereof, Figure 1 is a side elevation through a window embodying the present invention.

Figure 2 is a view similar to Figure 1 but with the multiplesash moved outwardly by means of the manipulating sash and locked in position.

Figure 3 is an enlarged side elevation illustrating details of the sash operator, the several sashes being in closed position.

Figure 4 is an enlarged view illustrating the position of the operating mechanism during opening movement of the sash.

Figure 5 is another enlarged side elevation,

the upper sash being open and the bottom of adlusting sash being in an intermediate position.

Figure 6 is a section taken along the line 6'-6 of Figure 3.

Figure '7 is a fragmentary side elevation of a sash position indicator.

Figure 8 is a schematic showing of the sash positions.

Figure 9 is a side elevation, partly in section, through a modified selector mechanism.

In accordance with this invention I provide a plurality of sashes I I, I2 and i3 in a suitable win dow frame H. The several sashes can be made of wood or steel as is desired, I I being the lowermost sash and I2 the intermediate sash and i3 the uppermost sash. The invention can be applied to any number of sashes and for convenience I have illustrated three.

' In accordance with this invention, each sash is mounted directly in the window frame H in a relatively simple manner. Preferably the uppermost sash I3 is mounted from upper frame member II in the. window frame ll by hinge butts l3. This enables the sash to be positioned close to a depending lip ll on member l5 whereby protection against. sunlight or weather entering between the window. and the member I5 is assured.

The lower sash is hinged on the frame by arms l8 secured on eachside of the sash and positioned'by pins IS on supports 21 secured to each frame. This is a. simple, strong construction as compared to those in which the upper sash end is supported by a sliding shoe in a track. By hav ing each sash hinged at a fixed point in the frame, its weight can be cared for more adequately and with less expense.

In accordance with this invention I provide travel bars 22 one on each side of the window frame and loosely mounted in channel members 23 secured to each side of the'frame [4. These guide each travel bar as it is moved up and down in the window frame. Sash I2 is directly connected by links 21 hinged on the sash and on each travel bar. Sash I3 carries links 24 hinged thereon by brackets 25 and arms 26 secured to each travel bar. This construction is employed to maintain the same vertical center spacing between the upper end of sash l3 and the pivotal connection point between links 21 and arm 26 as exists in the other sashes and their connection 'to the travel bars.

Adjacent the lower end of each travel bar is opening defined along one side by an upwardly sloping face 33.to a longer vertically extending slot 34. A pin 36 carried on one end of a link 31 and riding in vertical channel 35 is adapted to ride in the slot 32, across the angular face 33 and to move vertically in the slot 3| as sash l I is manipulated. I

The operation of sash II and the movement of the pin 33 to move the travel bar will be further apparent upon a discussion of Figures 3, 4, 5 and 9. In Figure ,3 I have shown the travel bar in an extreme upper vertical position with the pin 36 at the upper end of the slot 32. In this position all the sashes areclosed as in A of Figure 8.. Upon initial outward movement of sash II the pin 38 moves downwardly in the slot, the winon the end dow moving outwardly until the pin engages the bottom portion of the slot. Depending on the length of the slot, sash II can be opened selectively without opening the upper sash. This opening of the lower sash can be quite extensive and I have successfully opened the lower sash 40 without opening the other sashes. This is shown in B of Figure 8. The length of arms 3! is usually greater-than the length of arms 21 and 24 to ensure that the upper sash can be moved outwardly at a rate greater than the rate of the lower sash to the end. that finally all sashes assume the same angular position when open as in C of Figure 8. If pin 36 has no lost motion, all the arms should be equal in length; in this case any outward movement of sash moves sashes l2 and I3 as well. The extent of free motion of sash II is controlled primarily by the length of the slot 32. When pin 36 engages thebottom of the slot continued outward movement of the sash II will pull the travel bar downwardly whereby the upper connected sashes are moved.

In Figure 4 the pin is shown in the lowermost" portion of the slot and the travel bar has moved down slightly, while in Figure 5 the tooth 4| is shown in locking engagement with one of the notches 42 in plate 43 corresponding generally with position C in Figure 8. The tooth can engage any one of the notches, the final opening of all sashes being limited by stop 66. When it is desired to retain the sashes in a selected position and to lock them in this position. sash is moved inwardly toward closed position whereupon pin 36 is moved upwardly in channel 36. Now the travel bar end is so provided in its guides that face 33 is kept in engagement with the pin 36. This is because in that position shown in Figures 1, 3, and 9, the travel bar is sprung slightly. As the pin moves up, face 33 slides past the pin and in engagement. The end of the travel bar is thus permitted to move to the left, in Figures 1 through 6 until tooth 4| engages one of the notches 42 and plate 43 secured on the side of the frame. As the sash continues to move inwardly the pin 36 moves into the slot 34 until the sash II is in closed position as in D of Figure 9. Thus the several upper sashes can be locked in selected open position while sash II is closed.

When it is desired to open the upper sashes further, sash II is moved outwardly. This pulls the pin 36 down in the slot 34. When it reaches the face 33, the pin rides across this face as it moves down in its slot and thus forces the end of the bar to the right in Figures-2 and 5. Continued outward movement of sash ll causes the travel bar to move downwardly until tooth 4| rides on or abuts a portion of the plate 43 beyond one of the notches. If the sash H is then pulled inwardly, the pin 36 will move upwardly to engage the upper portion of slot 32 wherein it is retained so long as the sash is moved inwardly.

While many persons are able to operate the window successfully by feel of the movement of the projecting teeth 4| over the notched plates 43 and to judge as to the position of the sash by a visual examination thereof during movement, a suitable visual indicating mechanism can be provided quite readily. To this end a pin or pointer 46 is provided on the end of the plate 3|. The pin or pointer '46 cooperates with a plate 46 secured upon the side of the frame. The plate includes a suitable plural notched slot 41 therein corresponding to the movement of the pointer of the travel bar under the control of the sash II. By observing the pointer relation to the slot, one operating'the sash can readily determine to what extent the upper sash had been opened by the lower sash and the condition in which the sash had been left for if the lower sash has been locked, then the pointer 46 is in one of the notches.

In Figure 9 I have shown a simplified form of notched plate designated as 43a and including a slot 6| therein serving to position the plate slidably on pins 62 and 63 which position, support and retain the plate 431: in the window frame. The position of the plate 43a is under the control of an adjusting and locking means generally indicated at 64, the plate being selectively-moved up or down to any desired position of adjustment and locked in this position by utilization of the locking means, the details of which are not'shown but which can be readily provided by those skilled in the art.

In operation, the notched plate 43a being set in a definite position, the operator can open sash to that extent permitted by the length of slot 36 and providing that plate 430. is not set at such a point that tooth 4| first engages the stop 66 on plate 43a. If it be desired to open all the sashes, continuedoutward movement of sash is effective, as previously explained, to this end. However, when the sash reaches its limit of movement, depending on the setting of plate 43a, inward movement of the sash II is effective to move the end of the travel bar to the left in Figure 9, against the normal spring tension in the travel bar, whereupon the tooth 4| comes to rest inthe notch 42a and the upper sashes are locked in position with the lower sash closed, as in D of Figure 9. In this position, with sash closed, one can also manipulate the other upper sashes i2 and I3 by moving plate 43a for,

in this position, pin 36 is riding in slot 34 in the travel bar, sash II .is closed while, due to the engagement between the tooth 4| and the notch 424, the travel bar is directly connected to the other sashes.

From the foregoing I believe it will ,be apparent that I have provided certain advantage-.

ous features in the sash construction disclosed. The various sashes are positioned by hinges or hinged arms directly on the frame, thus providing a stronger and cheaper type of connection as well as one that is easier to install and maintain.

. As between the various sashes,the bottom sash can be opened independently and to a desired degree or, with the bottom sash closed, the outer sash can be moved independently. Further, with the sashes hinged on the frame of the window and connected directly to the traveling bar, a

strong leverage on each sash is provided, thus making the installation simpler to install, cheaper to manufacture and maintain, and easier to operate.

I claim:

1. In a window having a frame and a plurality of sashes, means hinging one end of each sash in said frame at a fixed point thereon for anoutward swinging movement in said frame, a

travel bar movable longitudinally in said frame. I

guides secured on said frame for said bar, a

stop on said frame adjacent an end of said travel bar, a link hinged to each sash and to said bar and serving with said bar to interconnect said plurality of sashes for movement, said travel barv thereof. a second slot adjacent to said first slot and extending generally parallel to said first slot. and a third slot connecting said first and second slots and having a side thereof extending ang'ularly to the longitudinal axis of said bar, the link associated with one sash including a pin, a guide for said said frame, said pin being movable, Don movement of said one sash, in said guide and in said slots (1) to move said travel bar longitudinally in said guides or (2) move said end of said trav'el bar transversely in a selected position of said travel bar. I

2. In a window having a frame and a plurality of sashes, means hinging one end of each sash in said frame at a fixed hinge point thereon for an outward swinging'movement in said frame, a travel bar movable longitudinally in said frame,

guides secured on said frame for said bar, a link hinged to each sash and to said her and serving to interconnect said plurality of sashes for movement, the link associated with one sash including a pin movable selectively and under control of said one sash back and forth over a substantially straight iinepath in a guide extending longitudinally of said frame,said travel bar including an aperture therein for saidpin, said aperture being defined by two parallel longitudinal slots adjacent an end of said travel bar'and a third slot interconnecting said slots and extending 'angularly across said bar, said slots cooperating with said pin to (1) move said travel bar longitudinally in said guides or (2) move said end of said travel said frame.

3. In a window as defined in claim 1, means supporting said stop for movement along said frame whereby the position wherein said stop can engage said travel bar end canbe varied.

4. In a window having a frame and a plurality of sashes, means hinging one end of each sash in said frame at a fixed hinge point thereon for an outward swinging movement in said frame, a travel bar movable longitudinally in said frame, guides secured on said frame for said bar. a link hinged to each sash and to said bar and serving to interconnect said plurality of sashes for movement, a stop secured on said frame and providing a plurality of predetermined sash open positioning means for the travel bar when said stop in engaged with an end of said bar, said travel bar having a first slot extendbar transversely of ing substantially longitudinally along said bar adiacent said bar end, a second slot extending adjacent said first slot and generally parallel to said first slot, and a third slot connecting said first andsecond slots and having a side thereof extending angularly to the longitudinal axis of said bar, the link associated with one sash including a pin, a guide for said pin extending longitudinally of said frame, said pin being movable, upon movement of said one sash, in said guide and in said travel bar longitudinally in said move said end of said travel bar a selected position of said travel bar.

guides or (a) in pin extending longitudinally of slots to (1) move said operator fo'r a multiple sashwindow comprising a travelbar adapted to'be moved longitudinally in a frame for said window, a guide adjacent an end of said bar and ex- 5 tending longitudinally of said frame, a link adapted for attachment to a sash of said window, said bar having a first and a second slot extending along'said bar, generally parallel to each other and connected adjacent one end thereof by a third slot extending angularly with respect to said slots, and a pin on said link movable in said guide to engageone or the other of saidfirst and second slots.

6. An operator for a multiple sash window comprising a travel bar adapted to be moved longitudinally in a frame for said window, a guide adjacent an end of said bar and extending longitudinally of said' frame, a link adapted to beattached to a sash of said window, said bar having a first and a second slot extending along said bar adjacent one end of said bar, said second slot extending beyond said first slot, said slots being generally parallel to each other and connected adjacent one end thereof by a third slot extending angularly with respect to said slots, and a pin on said link movable in said guide to engage one or the other of said first and second slots.

7. An operator for a multiple sash window comprising a travel bar adapted to be moved longitudinally in a frame for said window, a guide adjacent an end of said bar and extending longitudinally of said frame, a link adapted for attachment to .a sash of said .window, said bar having a first and a second slot extending along said bar, generally parallel to each other and connected adjacent one end thereof by a third slot extending angularly with respect to said slots, anda pin on said link movable in said 40 guide selectively to engage one or the other of said first and second slots whereby said bar is movable by said link, said second slot being of a length sufficient to permit said pin to move therein without moving said travel bar when the sash moving said pin is moved from open position to closed position.

8. An operator for a multiple sash window comprising a travel bar adapted to bemoved longitudinally in a frame for said window. a uide adjacent an end of said bar and extending longitudinally of said frame, a link adapted to be attached to a sash of said window, a pin on said link and movable thereby in said guide, a first slot for said pin extending longitudinally of said bar and engaged by said pin to move said bar longitudinally in said frame, a slot extending angularly to said first slot from an end thereof and engaged,by said pin to force said bar end to move transversely in saidfr'ame, and

a second slot adjacent the other end of said an- 00 guiarly extending slot and providing a lost motion connection between the pin and the bar.

HARRY LARSON. I 

